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总状星珠霉絮凝剂培养及性能研究 被引量:1

Cultivation of Syncephalastrum racemosum Schroter and research on its properties
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摘要 从活性污泥中筛选出一株产絮凝剂的霉菌——总状星珠霉,该菌所产絮凝剂对高岭土的絮凝活性可达90%以上。发酵试验表明该霉菌产生絮凝剂的最佳条件为:碳源为葡萄糖,氮源为NaNO3,碳源与氮源的质量比为1∶1,生长和分泌絮凝剂的最适温度是30~34℃,该霉菌液体发酵24h絮凝活性可达到89.9%,在培养基初始pH值为3.0~10.0范围内所产絮凝剂对高岭土的絮凝活性始终保持在85%以上。絮凝剂理化性质试验表明该霉菌所产絮凝剂是一种多糖物质。实际废水处理试验表明该絮凝剂对啤酒废水和石化废水都有很好的处理效果,浊度去除率分别达到93.2%和87.4%,悬浮物去除率则分别达到81.3%和92.8%。 A bioflocculant-producing strain-Syncephalastrum racemosum Schroter-was isolated from activated sludge; the flocculating activity of the flocculant produced by the said strain for Kaolin clay suspension was above 90%. The ferment test indicated the optimal condition for the strain producing flocculant, which was: using glucose as carbon source, NaNO3 as nitrogen source, the mass ratio between the carbon source and the nitrogen source was 1 : 1; the optimal temperature for flocculant's growth and exudation was 30 - 34 ℃.The flocculating activity of the strain-containing liquid after 24 h of ferment reached 89.9%, when the initial pH value of the culture medium was within the range of 3.0 - 10.0, the flocculating activity of the flocculant for Kaolin clay suspension was always above 85%. The flocculant produced by the said strain was identified as polysaccharide through the test on its physical/chemical characteristics. The result of the test on practical wastewater treatment showed that: the said flocculant had a good effect on brewage wastewater and petrochemical wastewater treatment, the removal rate of turbidity were 93.2% and 87.4% respectively, and the removal rate of SS were 81.3% and 92.8% respectively.
出处 《工业用水与废水》 CAS 2006年第4期67-70,共4页 Industrial Water & Wastewater
关键词 总状星珠霉 筛选 多糖 废水处理 Syncephalastrum racemosum Schroter screening polysaccharide wastewater treatment
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参考文献1

  • 1R Kurane,H Matsuyama.Production of a bioflocculant by mixed culture[J].J Biosci Biotech Biochem,1994,58 (9):1589-1594.

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